|Beta version of Congress.gov web site|
You still can use Thomas.gov to find information on a bill or piece of legislation. In about a year's time the new Congress.gov site will take over. The new site will make it easier to find bills, research legislation, and you will be able to access data over mobile devices.
One of the things that will be easier is getting a better understanding of how congress works. You should check out the legislative page that contains text and video that brings a bit of clarity about the process.